Body mass index (BMI) is a simple calculation from height and weight that clinics sometimes use as one part of a fertility assessment, because both being underweight and living with obesity are associated with irregular ovulation and can affect the chances of natural conception and the safety or success of fertility treatment. BMI is a screening tool, not a diagnosis, and it does not measure body composition, fitness, or a person's effort or worth. Some clinics apply BMI thresholds for certain procedures for safety reasons, such as risks around anaesthesia or ovarian stimulation, and these thresholds vary between clinics in India. If BMI is raised as part of your assessment, ask your team to explain why it matters for your specific treatment plan, and discuss any concerns about weight in a supportive, non-judgemental way with your care team or a dietitian. BMI should never be used to shame a patient, and discussions about weight and fertility are most helpful when framed around health and treatment safety rather than appearance.
Also known as: BMI, underweight, overweight, obesity
Related India guides
Sources
- ICMR Standard Treatment Workflows (icmr.gov.in/standard-treatment-workflows-stws)
- Federation of Obstetric and Gynaecological Societies of India (fogsi.org)
Last reviewed: 9 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.